chem question

Question

What mass (g) of K2SO4 is produced if 18.0 g of KOH completely reacts with H2SO4 in the following reaction?

2 KOH (aq) + H2SO4 (aq) \longrightarrow ⟶ K2SO4 (aq) + 2 H2O (l)

Answer 1

2KOH + H2SO4 ==> K2SO4 + 2H2O  Balanced equation

Note from the balanced equation it takes 2 moles KOH to produce 1 mole K2SO4.

Find moles of KOH used in the reaction by converting 18.0 g KOH to moles KOH (Divide 18.0 by molar mass KOH)

Once you have the moles of KOH used, the moles of K2SO4 produced will be 1/2 that amount (see mole ratio in balanced equation).

Now that you have the moles of K2SO4, convert that to grams K2SO by multiplying by the molar mass K2SO4.